How do you calculate the efficiency of a bouncing ball?
How do you calculate the efficiency of a bouncing ball?
The efficiency of a ball can be calculated by dropping and measuring the height of the bounce. The higher the bounce, the more efficient the ball is. Balls which do not bounce high are less efficient as they have lost energy.
Which ball will bounce the highest?
rubber ball
When all three balls are dropped from the same height, the rubber ball will bounce the highest because it has the greatest elasticity. When the rubber ball hits the ground it gets compressed, or squished, and because it is very elastic, it quickly returns to its original shape.
What is the control variable in the bouncing ball experiment?
Dependent variable is the height that the ball bounces. Constants are the release height, the bouncing surface, the type and the size of the ball. Controlled variables are air temperature, air flow, air pressure where you perform your tests.
Why it is impossible for a ball to be 100% efficient?
Explanation: No machine is free from the effects of gravity, and even with wonderful lubrication, friction always exists. The energy a machine produces is always less than the energy put into it (energy input). That is why 100% efficiency in machines shall not be possible.
What makes balls bounce higher?
As the ball is dropped and gravity forces it downward, the velocity of the ball increases because of the accelerating effects of gravity. The ball falls through the air, converting stored energy to the energy of motion, and impacts the floor, bouncing higher.
How does the size of a ball affect its bounce?
The air friction is approximately proportional to the square of the radius at high speeds, and to the radius at low speeds. So for bigger balls the ratio of gravitational to frictional force goes up, compared to small balls. That would tend to make the large balls bounce higher.
What factors affect the bounce of a ball?
The combination of the material properties of a ball (surface textures, actual materials, amount of air, hardness/ softness, and so on) affects the height of its bounce.
What is the acceleration of a bouncing ball?
On earth, this acceleration due to gravity is 9.8 m/s2 (g= 9.8 m/s2). This means, in essence, that for every second for falling, the ball’s velocity will accelerate by 9.8 m/s.
How is efficient 3 words?
Comparing Efficient, Effective, and Proficient These three words cover some overlapping territory. Efficient most often describes what is capable of producing desired results without wasting materials, time, or energy.
What is the bouncing ball experiment?
Bouncing Ball Experiment An alternative experiment is to investigate how the height of each successive bounce changes.
Does the number of bounces of the ball change with height?
We believe that the number of bounces of the ball will increase as the height of the ball drop decreases.
What controlled variables were used in the bounce experiment?
Controlled Variables: Bouncy ball used, surface bounced off of, technique in which ball was dropped (initial height was measured from base of ball). To set up the experiment, two meter sticks were taped on top of one another, starting from the base of a flat wall.
How do you measure bounce height of a tennis ball?
The tennis ball was then dropped from various heights; 1, 1.5 and 2 meters above a hard surface, using a meter ruler, before it was dropped onto the ground and the resulting bounce height measured. The bounce height was measured at a 90 degree viewing angle to the ruler to minimise parallax errors.
